Apparatus for mixing and delivering concrete



1a A. GASTEIGER.

APPARATUS FOR MIXING AND DELIVERING CONCRETL,

APPLICATION FILED AUG.26. I919.

Patented Dec. 16, 1919 3 SHEETS-SHEET I.

J. A. GASTEIGER.

APPARATUS FOR MIXING AND DELIVERING CONCRETE.

APPLICATION FILED AUG- 26. I919.

Patented Dec. 16,1919.

3 SHEETS-SHEET 2- mvs TOR z r .5 N 3 m 9 F lillhll'll." IPTII'IIIIIIIWAiIH fl wl s I||||I. flfi I g n r w 5 w 1? v/ Y I 1. A. GASTEIGER..APPARATUS FOR MIXING AND DELIVERING CONCRETE.

APPLICATION FILED AUG-26.19I9.

Patent-ed Dec. 16,1919.-

3 SHEETS-SHEET 3- nw n lllll lll f. v

JUSTUS A. GASTEIGER, OF PITTSBURGH, PENNSYLVANIA.

APPARATUS FOR MIXING AND DELIVERING CONCRETE.

Specification of Letters Patent.

Patented Dec. 16, 1919.

Application filed August 26, 1919. Serial No. 320,064.

To all whom it may concern:

Be it known that I, JUsTUs A. GAS'IEIGER, a citizen of the UnitedStates, and resident of Dormont, Pittsburgh, in'the county of Alleghenyand State of Pennsylvania, have invented a new and useful Improvement inApparatus for Mixing and Delivering Concrete; and I do hereby declarethe following to be a full, clear, and exact description thereof.

My invention relates to apparatus for mixing and delivering concrete,and more especially to that type ofapparatus in which a tower isemployed from which the concrete is delivered by gravity, the concretebeing elevated in buckets and discharged into chutes to be delivered tothe point where the concrete is to be used.

By my invention Iprovide for the elevation of the mixer itself todifferent heights in the tower, the mixer being rotated continuously sothat the concrete does not have opportunity to set, or its componentsbecome segregated, while at the same time I provide for the automaticdischarge of the concrete at a predetermined height in the 'tower,thereby dispensing with the tower-hoppers heretofore employed, as wellas the man located in the tower for operating said hopper. In this way Iam enabled to utilize the full height of the tower, furthermore, but oneengine is required for mixing and hoisting, thereby creating a greatsaving in cost and at the same time mixing and delivering in a moreefficient and economical manner.

In the drawings Figure 1 is a vertical elevation broken away of myimproved apparatus; Fig. 2 is a view at right angles to Fig. 1 partly insection; Fig. 3 is an enlarged view showing the mixer at the bottom ofthe tower in full lines and at an elevated position in the tower. indotted lines; and Fig. 4.- is an enlarged cross-section of the towershowing aportion of the mixer and the manner in which the delivery-panis mounted.

In the drawing, the numeral 2designates a tower built up of verticalbeams and cross members properly braced to give the requisite strength,and built up to any height desired. Guide strips 3 are provided atapposite sides of the tower which form the guides for the mixer 1 whichis supported or carried in the frame 5. This frame is composed of thevertical channel-bars 6 connected by the angular cross-members 7.Idle-rollers 8 are mounted in the frame 5, said rol ers engaging thecircular track 9 on the mixer. The channel-bars 6 of the frame 5 engagethe guides 3 0n the tower, and said frame is adapted to move up and downin said guides.

Secured to the channel-bars 6 of the frame 5 are the arms 10 and 11,said arms forming the support for the rocker-shaft 12. Mounted on therocker-sl'laft 12 is the, delivery pan 13. The normal position of saidpan is clearly indicated at the bottom of Fig. 3 in full lines wheretheinner end 11 of said pan projects into the end opening 15.of the mixer4.

Secured to one end of the rocker-shaft 12 are the arms 16 and 17, thearm 17 en gaging the arm 11 so as to limit the movement of therocker-shaft 12 as well as the delivery pan 13, and holds said pan inthe position indicated in full lines at the lower end of Fig. 3.

The tripper-arm 16 is adapted to engage the stop 18 which is in the pathof said arm as the mixer is elevated so as to bring the delivery pan 13into discharging position, as will more fully hereinafter appear. The

stop 18 may be adjusted at different heights on the tower in order toprovide for the discharging 0f the concrete at different heights on thetower.

Mounted at the upper end of the tower 2 are the sheaves 19, 20 and 21.

The engine 22 is mounted on the platform 23. The pinion 24: on theengine shaft 25 meshes with the gear-wheel 26 on the shaft 27. Thepinion 28 on the shaft 27 engages the large gear 29 on the shaft 30. Thelarge gear 29 engages the gearwheel 31 on the shaft 32. The shaft 32carries the sheave 33.

A drum, 3% is mounted loosely on the shaft 30, suitable clutch mechanism(not shown) being provided for operating, and by the clutch-lever35 forthrowing the drum 31' into driving engagement with the large gear 29. Abrake-band wheel 36 operated by the lever 37 is provided for controllingthe movement of the drum 3%.

A cable 38 passes around the sheave 33, said cable passing over thesheave 21 and around the pulley 39, up over the sheave F 2 is the frame42 with the working platform 43 and the cement platform 44, a bin 45 forsand and broken stone is provided, said bin having the chute 46connected therewith with a swinging gate 47 to control the supply ofsand and stone to I livered b the hopper 48 which delivers the stone,sand and cement to the mixer 4. This arrangement, however, forms no partof my present invention and any suitable arrangement may be employed fordelivering the materials to the delivery-hopper 48.

Pivoted to the lower'end of the deliverychute 48 is the extension 49which extends into the end opening 50 of the mixer 4 so that as saidmixer rises the hinged extension 49 will be folded up over the end ofthe hopper to close the same until the mixer has been lowered into theposition to receive another charge, whereupon said hinge exten sion islowered. The extension 49 has the stud 49 which engages a latch 49 whenthe mixer 4 moves up so as to swing the extension 49 into the dottedposition Fig. 3, thus closing the end of the chute. When it is desiredto lower the extension the latch is tripped and the weight of thematerial lowers said extension.

When my improved apparatus is in Operation the mixture of stone,concrete and sand is delivered by the chute 48 into themixer 4 and withthe engine 22 in operation said mixer will revolve by reason of thecable 38 passing around the same. WVhen it is desired to elevate themixer, the clutchlever 35 is operated to throw the drum 34 into drivingengagement with the shaft 30, whereupon the cable 41 winds up on thedrum 34 and the pulley 39 is lowered which acts to elevate the mixer,the frame supporting said mixer moving up the guides 3. When thetripper-arm 16 comes into engagement with the stop 18 the delivery pan13 will be thrown around into position shown in dotted lines Fig. 3, sothat as the mixer revolves, the concrete contained therein is deliveredinto the pan 13 and passes from said pan into the chute 51 to bedegravity to the point where it is to be user When the contents of themixer has been delivered by the pan 13 into the chute 51 the mixer islowered to receive another charge and the delivery pan 13 of its ownweight resumes its normal position.

The mixer rotates continuously during its 1 ,eaieeo ascent in the tower,and consequently there is no opportunity for the concrete to set or thematerial to be segregated. Furthermore, the mixer rotates continuouslyand itis not necessary to bring it to a state of rest either forreceiving the charge or during the discharge of the contents when themixer has been elevated in the tower.

Only one engine is required for the work, as the same engine whichrotates the mixer also elevates the same, and as the mixer can beelevated to the top of the tower, the full height of the tower isutilized. By changing the position of the stop-bar 18 it will beapparent that the delivery-pan may be brought into action at any desiredpoint.

What I claim is:

1. In apparatus for the mixing and-delivering of concrete, thecombination of a tower, a frame vertically movable therein, a mixercarried by said frame, means for elevating said frame, means forrotating said mixer, a delivery device carried by said frame, and meansfor bringing said delivery deviceinto position to discharge the contentsof said mixer when elevated to the desired height.

2. In apparatus for mixing and delivering concrete, the combination of atower, a

carried by said frame, means for elevating said frame, means forrotating said mixer, a tiltable delivery device carried by said frame,and a stop in the path of said delivery device whereby said deliverydevice is tilted to discharge the contents of said mixer when said mixerhas reached the desired height.

4. In apparatus for mixing and delivering concrete, the combination of atower, a frame vertically movable therein, a mixer carried by saidframe, means for elevating said frame, means for rotating said mixer, arocker-shaft carried by said frame, a delivery device mounted on saidshaft, a trip' arm on said shaft and a stop on said tower in the path ofsaid trip-arm, whereby said delivery device is tilted to discharge thecontents of said mixer when said mixer reaches the predetermined height.

5. In apparatus for mixing and delivering concrete, the combination of atower, a frame vertically movable therein, a mixer carried by said framehaving an open end, means for elevating said frame, means for rotatingsaid mixer, and a delivery device carried by said frame and projectinginto 10 carried by said frame and projecting the open end of said mixer.through said opening in said mixer. In testimony whereof, I, the said JUSTUS 6. In apparatus for mixing and delivering A. GASTEIGER, havehereunto set my hand. v concrete, the combination of a tower, a framevertically movable'therein, a mixer carried JUSTUS GASTEIGER' by saidframe having an open end, means for Witnesses:

elevating said frame, means for rotating T. B. HUMPHmEs,

said mixer, and a tiltable delivery device Rom. D. TOTTEN.

